GB2017440B - Tuning device - Google Patents
Tuning deviceInfo
- Publication number
- GB2017440B GB2017440B GB7906447A GB7906447A GB2017440B GB 2017440 B GB2017440 B GB 2017440B GB 7906447 A GB7906447 A GB 7906447A GB 7906447 A GB7906447 A GB 7906447A GB 2017440 B GB2017440 B GB 2017440B
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuning device
- tuning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
- H01P7/082—Microstripline resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2297278A JPS54115045A (en) | 1978-02-28 | 1978-02-28 | Electronic tuning circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2017440A GB2017440A (en) | 1979-10-03 |
| GB2017440B true GB2017440B (en) | 1982-05-19 |
Family
ID=12097476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7906447A Expired GB2017440B (en) | 1978-02-28 | 1979-02-23 | Tuning device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4254390A (en) |
| JP (1) | JPS54115045A (en) |
| CA (1) | CA1130483A (en) |
| DE (1) | DE2907472C2 (en) |
| GB (1) | GB2017440B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2548846B1 (en) * | 1983-07-08 | 1985-10-25 | Trt Telecom Radio Electr | TUNER CIRCUIT TUNABLE IN A DISCRETE WAY OVER A PLURALITY OF TUNING FREQUENCIES AND FILTER COMPRISING AT LEAST ONE SUCH CIRCUIT |
| JPS60236501A (en) * | 1984-05-10 | 1985-11-25 | Yagi Antenna Co Ltd | bandpass filter |
| FR2565438B1 (en) * | 1984-05-30 | 1989-09-22 | Cepe | DIELECTRIC FILTER WITH VARIABLE CENTRAL FREQUENCY. |
| JPH0246082Y2 (en) * | 1985-04-04 | 1990-12-05 | ||
| FI89991C (en) * | 1989-05-02 | 1993-12-10 | Nokia Telecommunications Oy | HOEGFREKVENSBANDPASSFILTER |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2754484A (en) * | 1954-11-22 | 1956-07-10 | Itt | Shield for microstrip circuits |
| AT272412B (en) * | 1965-10-13 | 1969-07-10 | Telefunken Patent | Line circuit for high-frequency electrical oscillations |
| DE1261918B (en) * | 1966-12-02 | 1968-02-29 | Telefunken Patent | Amplifier for high-frequency electrical oscillations with circuit lines in stripline technology |
| JPS5231601A (en) * | 1975-08-19 | 1977-03-10 | Matsushita Electric Ind Co Ltd | Ultrahigh frequency tuner |
-
1978
- 1978-02-28 JP JP2297278A patent/JPS54115045A/en active Pending
-
1979
- 1979-02-23 GB GB7906447A patent/GB2017440B/en not_active Expired
- 1979-02-26 DE DE2907472A patent/DE2907472C2/en not_active Expired
- 1979-02-27 CA CA322,531A patent/CA1130483A/en not_active Expired
- 1979-02-27 US US06/015,602 patent/US4254390A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54115045A (en) | 1979-09-07 |
| DE2907472A1 (en) | 1979-09-06 |
| DE2907472C2 (en) | 1987-03-26 |
| GB2017440A (en) | 1979-10-03 |
| CA1130483A (en) | 1982-08-24 |
| US4254390A (en) | 1981-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930223 |